KR100528385B1 - System for collecting remote data using Power Line Communication - Google Patents

Abstract

The present invention relates to a system for collecting remote data information using power line communication, and more particularly, to form a subscriber zone connected to one transformer into one small zone, and to divide N small zones into one heavy zone. By installing a line bridge or line repeater that connects the transmission lines of each sub-region by power line communication, the meter-related data transmitted from a plurality of electricity meters in the mid-zone and transformer-related data transmitted from the transformer are connected by one power line communication. The present invention relates to a remote data information collection system using power line communication that collects with a concentrator and enables remote meter reading and remote control of a transformer to perform data in a relatively large area in a short time through a concentrator.

The present invention sets one transformer and a plurality of watt-hour meters connected to the transformer in one small zone, grouping the small zones into N zones, and setting the heavy zone as a data concentrator in the heavy zone. In the remote data information collection system using a power line communication connected to a line repeater for transmitting to the low voltage power line of the adjacent small zone in different low-voltage power line between the constituent sub-regions, the line repeater is AC 86 ~ 260V supplied from the low-voltage power line A switching power unit for making a DC power source for driving a system using a voltage, a line coupler connected to a low voltage power line between the small zones, blocking line voltage of the low voltage power line, and extracting only data information; Filter and tune amplify extracted data information at specific frequency A process unit having an output filter and amplifier, a program unit connected to an output terminal of the filter and amplifier, and capable of performing the purpose and control of a system; and outputting data information on a carrier signal by control of the process unit A carrier controller, a carrier amplifier for voltage amplifying data information output from the carrier controller, and a power amplifier for power amplifying the carrier signal output from the carrier amplifier and transmitting the power signal to a line coupler connected to a low voltage power line. .

Description

System for collecting remote data using Power Line Communication}

The present invention relates to a system for collecting remote data information using power line communication, and more particularly, to form a subscriber zone connected to one transformer into one small zone, and to divide N small zones into one heavy zone. By installing a line bridge or line repeater that connects the transmission lines of each sub-region by power line communication, the meter-related data transmitted from a plurality of electricity meters in the mid-zone and transformer-related data transmitted from the transformer are connected by one power line communication. The present invention relates to a remote data information collection system using power line communication that collects with a concentrator and enables remote meter reading and remote control of a transformer to perform data in a relatively large area in a short time through a concentrator.

In general, the remote meter reading data and transformer information collection system uses power integration data information by the electricity meter installed in each customer and the information of the transformer by the temperature sensor and the current transformer installed in the transformer as the communication medium. It refers to various means of reading by electric company in remote place, and many patents and utility models have recently been registered or proposed.

The data collection process in the conventional remote meter reading data collection system typically collects meter reading data and transformer information by using power line communication, and transmits the collected information back to the upper data processing apparatus through short-range wireless communication. Although the meter reading methods have been proposed, the near-field wireless metering method, which is partially implemented by the electric power company, is impossible to read the meter installed in the basement of the customer at all, and the meter installed on the ground is also caused by various obstacles such as steel gates. It is not easy to send and receive data, and the meter reader's visit to Kaga Lake is premised.

As an example, Utility Model Registration No. 282114 (Registration Date: July 05, 2002), Utility Model Registration No. 274023 (Registration Date: April 19, 2002), Patent Registration No. 167188 (Registration Date: 1998 The remote metering system presented on September 26, 2015, mainly uses power line communication, but partially uses wired communication and short-range wireless communication, and forms a meter reading area of subscriber's meter connected by one transformer. As a result, a large number of metering zones have to be formed. As a result, data collection and communication equipment are required for each transformer, and thus, the installation and operation costs of the remote metering system are enormous, thus failing to be effective. .

The reason for this is that when wired communication is applied as a communication method between the electricity meter of the consumer and the collector collecting data information, a problem arises in that a separate signal transmission line must be provided, and between the consumer meter and the collector collecting data information. When applying near field communication as a communication method, as mentioned above, the meter installed in the basement cannot be read at all, and the meter installed on the ground is also difficult to transmit and receive data due to various obstacles such as steel gates. There is a problem.

In addition, when the power line communication is applied as a communication method between the electricity meter of the consumer and the concentrator that collects the data information, it is easy to collect data information, but when the transmission line is long, data loss is caused by noise, which makes it difficult to accurately read the data. According to this, if the type of transmission line is different from the high voltage line and the low voltage line, there is a problem that the remote metering system cannot be applied.

Therefore, it is possible to stably apply power meters installed in the basement, even between low voltage lines with different power transformers depending on the section, and to collect information of customer electricity meters and distribution transformers in more areas in a single concentrator stably and remotely. The way to increase the economics by reading the meter was required.

The present invention is to solve the above-mentioned conventional problems, the subscriber zone connected to one transformer is formed into one small zone, the small zones are divided into one middle zone by integrating N, each by power line communication By installing a line bridge or line repeater that connects the transmission lines of a small area to each other, information transmitted from multiple electricity meters and transformers in the central area can be collected by a single concentrator through power line communication. It is a technical task to make it possible to collect information in a relatively large area in a short time through an integrator.

The present invention sets one transformer and a plurality of watt-hour meters connected to the transformer in one small zone, grouping the small zones into N zones, and setting the heavy zone as a data concentrator in the heavy zone. In the remote data information collection system using a power line communication connected to a line repeater for transmitting to the low voltage power line of the adjacent small zone in different low-voltage power line between the constituent sub-regions, the line repeater is AC 86 ~ 260V supplied from the low-voltage power line A switching power unit for making a DC power source for driving a system using a voltage, a line coupler connected to a low voltage power line between the small zones, blocking line voltage of the low voltage power line, and extracting only data information; Filter and tune amplify the extracted data at specific frequency A process unit having an output filter and amplifier, a program unit connected to an output terminal of the filter and amplifier, and capable of performing the purpose and control of a system; and outputting data information on a carrier signal by control of the process unit A carrier controller, a carrier amplifier for voltage amplifying data information output from the carrier controller, and a power amplifier for power amplifying the carrier signal output from the carrier amplifier and transmitting the power signal to a line coupler connected to a low voltage power line. .

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to FIGS. 1 to 8.

1 is an exemplary diagram showing an information collection area in a remote data information collection system using power line communication according to the present invention.In the data collection of a number of electricity meters and transformers scattered throughout the country, individual electricity meters and transformers are installed in a wide area. How to combine the area unit in the configuration is a prerequisite problem, in the present invention, as shown in Figure 1 divided into a small zone (CA) and a heavy zone (P).

That is, the small area CA1 is the most basic meter reading area and is a region in which one transformer 1a to 1e supplies power, and the middle area P is configured by tying N small areas CA1 to CA5. In the station P, a concentrator 30 which is one data concentrator is installed.

In the present invention, for convenience of description, five sub-regions CA1 to CA5 are grouped into one heavy region P. However, since many differences may occur depending on regions, the small region CA determines the middle region P. The number is not limited, and one heavy region P is also mixed with a high voltage power line 2 indicated by a solid line in FIG. 1 and a low voltage power line 10a to 10c indicated by a dotted line.

Here, various data and information such as the electricity meter identification code, the previous month's instructions, the current guidelines, the voltage, the current value, the power value, the demand value, and the power factor value transmitted from the electricity meters installed in each sub-region CA1 to CA5, and each sub-region CA1 to CA5. Temperature, voltage, current value and phase information of transformer installed in CA5) are collectively defined as 'data information'.

Reference numerals 5b1 to 5e2 are poles without a transformer installed.

As described above, in the case of constituting the middle zone P by tying up the N small areas CA1 to CA5, the problem is how to transmit the meter data and the transformer information of each of the small areas to the concentrator 30. Power line communication between sub-zones with different power sources by connecting low-voltage power lines between each sub-region, but by installing a line bridge or line repeater that blocks power flow and extracts and transmits only data information. This becomes possible.

2 (a) to (c) is a line bridge 20 or a line repeater 40 between the small area (CA) in the remote meter reading data collection system using power line communication according to the present invention, or the line bridge ( 20) and the line repeater 40 are mixedly installed to show an example for interfacing both low voltage power lines with power line communication.

That is, FIG. 2A is a configuration in which only the line bridge 20 is installed, and a concentrator 30 which is one data concentrator is installed in the middle zone P, and the concentrator 30 is installed. Between the second and third subregions CA2 and CA3 adjacent to the first subregion CA1, a line bridge 20 for extracting and transmitting only data information through power line communication is provided to connect the low voltage power lines. Data information generated from a power meter and a transformer installed in three sub-areas CA2 and CA3 is collected by the power line communication via the line bridge 20 to the concentrator 30.

When the low-voltage power lines of the small area are connected to each other using only the line bridge 20 as described above, data close to the concentrator 30 can be transmitted smoothly, but the distance from the concentrator 30 is relatively far. Since the data information transmitted from the small area in the communication signal attenuation may occur, the line repeater 40 for transmitting the received information to the concentrator 30 through power line communication again after equalizing amplification and identification and reproducing. Is effective.

2B is a configuration in which the line bridge 20 and the line repeater 40 are mixed, and a concentrator 30 which is a data concentrator is installed in the central zone P. The concentrator ( Between the second and third sub-regions CA2 and CA3 adjacent to the first sub-region CA1 where 30) is installed, a line bridge 20 for extracting and transmitting only data information through power line communication is installed to connect low voltage power lines. On the low-voltage power line in the fourth sub-region CA4 located relatively far from the concentrator 30, equalized amplification and identification reproduction of the received meter data is performed, and then the line bridge installed in the second sub-region CA2 again. 20) to install the line repeater 40 to transmit to the power line communication.

In other words, (b) of FIG. 2 shows the line bridge 20 by equalizing and identifying and reproducing data information transmitted from a power meter and a transformer in a small area located relatively far from the concentrator 30 by the line repeater 40. It is to prevent the loss of meter reading data by transmitting to.

FIG. 2 (c) shows a third small section CA3 in which a concentrator 30 is installed on a low voltage power line between two first and second small sections CA1 and CA2. By installing the line bridge 20 and the line repeater 40 at the end of the concentrator 30 side of the low-voltage power line of the fourth subregion CA4 located far from the concentrator 30. It is to make the metering area effective.

Hereinafter, a process of collecting meter reading data in the concentrator 30 using the line bridge 20 and the line repeater 40 will be described in detail with reference to FIGS. 3A through 4B.

Figure 3a is to install the line bridge 20 between the small area (CA) in the remote meter reading data and transformer information collection system using the power line communication in accordance with the present invention to interface both low-voltage power lines to power line communication, Figure 3b Is a block diagram of the line bridge 20.

That is, the line bridge 20 is installed between the second sub-region CA2 and the low-voltage power line of the first sub-region CA1, so that the electricity meters 6a to 6n of the first and second sub-regions CA1 and CA2 ( The data information transmitted from the 7a to 7n and the transformers 1a and 1b is collected by the collector 30 installed in the first subregion CA1 through power line communication.

In more detail, the power meter 6a to which the power line communication modem existing in the first sub-area CA1 formed by the plurality of consumers provided with the concentrator 30 and installed with the power from the first transformer 1a are included. 6n) and a transformer 1a) in which the power line communication modem is installed separately are connected to the low voltage power line 10a, respectively.

In addition, a power meter (7a to 7n) with a power line communication modem built in a second sub-region CA1 formed by a plurality of consumers receiving power from the second transformer (1b) and a power line communication modem are installed separately ( Lines 1b are connected to the low voltage power lines 10b, respectively, and line bridges between the low voltage lines 10a and 10b of the first and second sub-regions CA1 and CA2 interface the two low voltage lines. 20) is connected.

As described above, a process in which data information is collected by the concentrator 30 in a state in which the lines of the first and second sub-regions CA1 and CA2 are connected by the line bridge 20 is described below.

First, the power integration data (power meter identification code, the previous month's instructions, the current guideline, the voltage value, the current value, the power value, which is installed in the customer of the first sub-region CA1 and is output from the power meters 6a to 6n in which the power line communication modem is installed. Demand value, power factor value, etc.) and related information (temperature, voltage, current, etc.) of the first transformer 1a are collected in the vicinity of the first transformer 1a through the low voltage power line 10a. And the related information transmitted from the electricity meters 7a to 7n and the second transformer 1b in which power line communication modems are installed and installed in the customer of the second sub-region CA2 is connected to the low voltage power line 10b. After extracting only the data information via the line bridge 20 secondly, the vehicle is transmitted to the concentrator 30 through the low voltage line 10a of the first subregion CA1.

Therefore, by interfacing the data bridges between the subregions by the line bridge 20, the electricity meters 6a to 6n (7a to 7n) and the first and second power meters installed at the customers of the first and second subregions CA1 and CA2. Data information of the second transformer (1a) (1b) can be collected in one concentrator (30).

3B is a configuration diagram of the line bridge 20, (A) when the power flowing in the low-voltage power line is a single-phase two-wire system, (b) is a one-phase three-wire or two-phase three-wire system (C ) Is a three-phase four-wire type, and the data information transmitted from the electricity meters 7a to 7n and the second transformer 1b installed in the customer of the second sub-region CA2 is connected to the line bridge through the low voltage line 10b. Only data information of the second sub-region CA2 is extracted by the transformer TS and the condenser C, which is 20), and transmitted to the low-voltage power line 10a of the first sub-region CA1 in which the concentrator 30 is installed. .

Therefore, the line bridge 20 can be bi-directional data transmission in the configuration of the transformer (TS) and the condenser (C) having no input and output, as well as the power line between the small areas when the line bridge 20 is installed between a plurality of meter reading zones It is possible to interface with the communication is to collect the data information transmitted from the electricity meters and transformers installed in a plurality of metering zones in one concentrator 30.

Here, the concentrator 30 receives and stores the ID codes of all the electricity meters and transformers in the middle zone P during the initial setup by the set program, and receives the identification codes of the newly installed electricity meters during operation. It stores with recognition date and time and performs data transmission and reception with existing electricity meter and transformer periodically. Existing identification code that does not respond to the call due to demolition is saved with the first non-date time and continues to be called periodically as before. If the call is not accepted for more than 30 days, the identification code is recognized as a normal demolition electricity meter and deleted.

In addition, the output signals of all power meters are sequentially received and calculated and stored for each set time, and the previous month's instructions, current instructions, voltage, current, power, demand value, power factor value, etc. are collected and stored for each identification code. All data will be sent in a batch when requested by a meter reading center or meter.

In addition, the real-time remote meter reading includes a calculation function that adds the power value of each transformer to add the load management for the transformer capacity and the current value of each transformer to perform the transformer load unbalance management in real time. In case of zero voltage or power, it immediately sends to the upper meter reading center to inform the power company of the power failure, and RAM and backup battery are built in to preserve the data in case of power failure.

The concentrator 30 having the above function is a well-known technique known in the art, and detailed construction and description thereof will be omitted due to the relationship that may obscure the gist of the present invention.

On the other hand, using the line bridge 20 as described above, the interface between the small area by power line communication has a lot of noise and signal attenuation, so it is preferable to apply between the concentrator 30 and the adjacent meter reading area, When the distance between the shorthand 30 and the meter reading zone is long enough to cause a signal attenuation, it is effective to use a line repeater that can equalize and identify and reproduce data information in the interface between the subzones.

4A is an exemplary diagram in which a line repeater 40 is installed for power line communication between small areas CA in a remote data information collection system using power line communication according to the present invention. In order to prevent the signal attenuation from occurring when the first sub-region CA1, which is installed at a distance, is far away from each other, data is received by power line communication within each zone, and the equalized amplification and identification playback of the received data is performed. The power line communication is to be transmitted to the focuser 30 again.

In more detail, the concentrator 30 is installed and the first transformer 1a forming the first subregion CA1 is connected to the electricity meters 6a to 6n installed in a plurality of consumers, and the second subregion CA2. Power meters 7a to 7n installed in a plurality of customers are connected to the second transformer 1b forming the second transformer 1b, and the second subregion CA2 is connected between the low voltage power lines of the first and second subregions CA1 and CA2. After receiving the data information of the power line communication, the line repeater 40 for transmitting the received data information is equalized by amplification and identification, and then transmitted to the concentrator 30 through the power line of the first sub-region CA1 by power line communication. Is installed.

4B is a block diagram of the line repeater 40. The switching power unit 41 makes a DC power supply for driving the system using AC 86-260V voltage supplied from the low voltage power line, and the second and first sub-areas. A line coupler (42) (48) connected to a low voltage power line (CA2) (CA1) to block the line voltage of the low voltage line and extract only data information; and the data information extracted by the line coupler (42). A filter and amplifier 43 for filtering and tuning amplifying and outputting a specific frequency, and a process unit 44 having a program connected to an output terminal of the filter and amplifier 43 for performing the purpose and control of the system; A carrier controller 45 for controlling and outputting a carrier of a communication signal under the control of the process unit 44, a carrier amplifier 46 for voltage amplifying a carrier signal output from the carrier controller 45, and It is composed of a carrier amplifier power amplifier 47 for transmitting the carrier signal outputted from the 46 to the power amplification to the low pressure line connected to the power line and the coupler 48 to the.

As described above, a process in which the meter data is collected in the concentrator 30 while the line repeater 40 is connected between the low voltage power lines of the first subregion CA1 and the second subregion CA2 is described below.

First, data information transmitted from the electricity meters 6a to 6n and the first transformer 1a installed in the customer of the first subregion CA1 and the power line communication modem is installed is connected to the first transformer 1a through the low voltage power line. Directly transmitted to the focusing machine 30 installed in the pole, the data information transmitted from the electricity meter (7a ~ 7n) and the second transformer (1b) installed in the customer of the second sub-area (CA2), the power line communication modem is installed is low pressure Via the power line first, through the second line line repeater 40, and then to the concentrator 30 via the low-voltage power line of the first subregion CA1 in the third lane.

At this time, the data information output from the power meters 7a to 7n and the second transformer 1b of the second sub-region CA2 passes through the low voltage line first, and then the line coupler 42 of the line repeater 40. By extracting only the data information, the extracted data information passes only through the filter and the amplifier 43 to filter only a specific frequency band, and then tunes and amplifies the filtered signal to the process unit 44.

The process unit 44 amplifies a signal to facilitate power line communication, generates a carrier signal by incorporating a carrier oscillator, and has a serial communication interface by incorporating a serial communication interface (SCI).

Accordingly, data information is loaded on the carrier signal generated by the process unit 44 and output through the carrier controller 45. The signal is amplified by voltage and power through the carrier amplifier 46 and the power amplifier 47. Then, it is transmitted to the concentrator 30 through the low voltage power line of the first subregion CA1 via the line coupler 48 to collect data information of the second subregion CA2 located at a relatively long distance. .

4c is another embodiment of the line repeater 40 to connect two line repeaters 40a and 40b in parallel to enable bidirectional communication. As such, when the bidirectional communication is performed, the bidirectional communication is smoothly performed by controlling the enable input using the call signal Busy between the two process units 44 so that the howling of the signal does not occur.

FIG. 5A illustrates another embodiment of the present invention, in which N subregions CA1 to CA5 are grouped together to form a middle region P. Each subregion CA includes data information of each subregion by a set program. After operation and storage, a data link unit (hereinafter referred to as 'DLU') 60 is installed to transmit / receive the information stored by the control command of the concentrator 30 to the concentrator 30 by power line communication. will be.

FIG. 5B is an exemplary diagram in which the functions of the line repeater 40 and the DLU 60 are mixed for power line communication between small areas in the present invention, and the DLU 60 is an AC 86 to 260 V voltage supplied from a low voltage power line. It is connected to the switching power unit 61 to make the DC power required to drive the system and the low voltage power lines of the second and first sub-regions CA2 and CA1 to cut off the line voltage of the low voltage power line and A line coupler 62 and 68 to be extracted; a filter and amplifier 63 for filtering and tuning amplifying and outputting data information extracted by the line coupler 62; and the filter and amplifier 63. The microprocessor unit 64 is connected to an output terminal of the microprocessor unit 64 for arithmetic processing by a program capable of performing the purpose and control of the system, and the carrier of the communication signal is controlled and output by the microprocessor unit 64. A line connected to a low voltage power line by power amplifying a carrier controller 65, a carrier amplifier 66 for voltage amplifying a carrier signal output from the carrier controller 65, and a carrier signal output from the carrier amplifier 66. A power amplifier 67 which transmits to the coupler 68, an EPROM 69 connected to the micro process unit 64 to store necessary data and programs which are designated in advance in case of power failure, and the micro process unit 64; Is connected to the RAM 70 is configured to temporarily store information of various meter information and transformer.

As described above, the process of transmitting and receiving data information in the state where the DLU 60 is installed in each subregion is as follows.

First, data information output from the electricity meters 6a to 6n and the first transformer 1a installed in the customer of the first subregion CA1 and the power line communication modem is installed is connected to the line coupler of the DLU 60 through the low voltage power line. 62) extract only the data information, and the extracted information passes through the filter and the amplifier 63 to filter only a specific frequency band, and to tune and amplify the filtered signal to the microprocessor unit 64. .

The micro process unit 64 amplifies a signal to facilitate power line communication, generates a carrier signal by embedding a carrier oscillator, and includes a serial communication interface (SCI) for a serial communication interface. Then, the information received by the program stored in the ypyrom 69 is analyzed and calculated, and the calculated information is stored in the RAM 70.

Herein, the functions of the microprocessor unit 64 of the DLU 60 are as follows.

First, it receives and stores the ID codes of all power meters and transformers in the meter reading area during initial setup.When the DLU 60 receives the ID codes of the newly installed electricity meters, it stores them together with the first recognition date and saves them. Periodically send and receive data together, and the existing identification code that does not respond to the call due to demolition is stored with the first non-compliance and continues to make periodic calls as before. The code is recognized as a normal demolition electricity meter and deleted.

And, by the program embedded in the micro process unit 64, the output signals of all the electricity meters are sequentially received, calculated, and stored for each set time, and the previous month's instructions, current guidelines, voltage, current, power, and demand values for each identification code. , The power factor value, temperature, and the like are collected and stored in the RAM 70. The current guideline, voltage, power, and power factor value are stored every hour. When the information is requested from the focusing device 30, which is a higher meter reading center, the RAM ( All data stored in 70) is transferred in a batch.

In addition, the real-time remote meter reading includes a calculation function to add the power value of each transformer to the load management of the transformer capacity and the current value of each transformer to perform the transformer load and unbalance management in real time, each power meter When the voltage or power of the unit becomes zero, it is programmed to immediately transmit to the upper meter reading center and inform the power company of the power failure information.

When the DLU 60 having the function described above receives an information transmission command from the focus meter 30, which is the upper meter reading and load management center, the DLU 60 loads the data information into a carrier signal and outputs it through the carrier controller 65. Is amplified voltage and power via the carrier amplifier 66 and the power amplifier 67, and then transmitted to the concentrator 30 via the low voltage power line via the line coupler 68.

6 is an exemplary diagram in which a function of a line repeater and a DLU is mixed for power line communication of two small area data information to another concentrator side small area according to the present invention, and the microprocessor unit 64 of the DLU 60 is provided. ) By adding a serial communication interface (SCI3) and using the overlapping components of the line repeater 40 and the DLU (60) in common, three different low voltage power lines (10a, 10b, 10c) Power line communication is made between.

That is, the data information transmitted through the low voltage power line 10b of the second subregion CA2 is transmitted through the line coupler 62 of the DLU 60 and the serial of the micro process unit 64 via the filter and the amplifier 63. In addition to being transmitted to the communication interface (SCI1), the data information transmitted through the low-voltage power line 10c of the third subregion CA3 is transmitted to the line coupler 42, the filter and the amplifier 43 of the line repeater 40. It is to be transmitted to the serial communication interface (SCI3) of the microprocessor unit 64 via.

Therefore, the data information received from the electricity meter and the transformer connected to the low voltage power lines 10a and 10b through the serial communication interface SCI1 and SCI3 of the microprocessor unit 64 is the DLU 60 shown in FIG. 5B. ) Is transmitted to the concentrator 30 by power line communication.

FIG. 7 illustrates another embodiment of the present invention, in which a DLU 60 and a line repeater 40 are connected in parallel between different low voltage power lines 10a and 10b to enable bidirectional communication. In particular, each of the micro process units 64 and 44 controls an enable input with a call signal Busy so that bidirectional communication is smoothly performed so that howling does not occur.

8 illustrates another embodiment of the present invention, in which each of the DLUs 60a, 60b, and 60c is installed on different low voltage power lines 10a, 10b, and 10c, respectively. 60a) Each microprocessor unit 64, which is a component of 60b and 60c, is provided with a short range wireless communication interface 70 and a long distance communication means interface 80 to collectively read meter information of the middle area P. The microprocessor unit 34 of the collector 30 to collect is used in common.

In this case, the microprocessor unit 34 constituting the concentrator 30 includes a plurality of serial communication interfaces SCI1 to SCI3 for receiving information from each of the DLUs 60a, 60b, and 60c. One serial communication interface (SCI4) for transmitting over the near field communication interface 70 and the long distance communication means interface 80 is provided.

That is, data information received from the electricity meters connected to each of the low voltage power lines 10a, 10b, and 10c and the transformers 1a to 1c is transmitted to the line coupler 62 and the filter of the DLUs 60a, 60b, and 60c. And the serial communication interfaces SCI1 to SCI3 of the microprocessor unit 34, which is the concentrator 30, by power line communication via the amplifier 63, respectively.

In addition, a control command for controlling the electricity meter connected to each of the low voltage power lines 10a, 10b, and 10c from the concentrator 30 may include a carrier controller 65 of each DLU 60a, 60b, 60c, Through the carrier amplifier 66, the power amplifier 67, the line coupler 62 is transmitted to the electricity meter connected to the low-voltage power line (10a) (10b) (10c) by the two-way communication is made, the concentrator ( All of the information collected at 30 is transmitted through the short range wireless communication interface 70 and the long distance communication means interface 80.

As described above, the present invention uses the line bridge 20 and the line repeater 40 independently or mixed with each other so that power line communication can be made between different low voltage power lines to enable bidirectional communication, as well as using them in combination. In the case of configuration, by using overlapping components in common, it is possible to collect the meter reading area information in a wider range by simple configuration.

As described above, in the present invention, the subscriber zone connected to one transformer is formed into one small zone, and the N zones are divided into one middle zone by integrating N small zones. The transmission and reception is to be made by power line communication, and between the low-voltage power lines existing in each subdivision unit, a line bridge or line repeater connecting the transmission lines to enable power line communication is alternatively installed, or a combination thereof.

Therefore, the present invention can collect a plurality of transformer information existing in the middle zone, a plurality of electricity meter data information and transformer-related information supplied from the transformer through a single concentrator at a place where the meter reading in a relatively large area By performing it in a short time, the trouble of reading due to the improper placement of the electricity meter installation position can be eliminated, the metering cost can be greatly reduced, the installation and operation cost of the remote metering facility can be reduced, and the transformer can be managed.

In addition, the present invention improves the reliability compared to short-range wireless communication, and in the future when real-time remote metering is connected to various long-distance communication means such as PSTN, personal communication service (PCS), GSM, Internet, etc. There is effect that we can use as facility.

1 is a remote data information collection system using power line communication in accordance with the present invention

       An illustration showing the collection area.

2 (a) to (c) is a remote data information collection system using power line communication

       Figure of installation state.

Figure 3a is a line bridge for power line communication between small areas in the present invention

        Example installed.

3B is a configuration diagram of the line bridge shown in FIG. 3A.

Figure 4a is a line repeater for power line communication between small areas in the present invention

        Example installed.

4B is a detailed block diagram of the line repeater shown in FIG. 4A.

4c is a two-way communication by connecting the line repeater shown in Figure 4b in parallel

        Block diagram of the state.

Figure 5a is a data link unit for power line communication in each subregion in the present invention

        Example of installing (DLU).

Figure 5b is a line repeater for power line communication between small areas in the present invention

        An example of the mixed installation of the DLU function.

Fig. 6 shows another small area data information of two places according to the present invention;

       Mixed function of line repeater and DLU for power line communication in small area

       Example installed.

Figure 7 is a DLU and line repeater for power line communication between small areas in the present invention

       An example of a state where two-way communication is possible by installing in parallel.

FIG. 8 shows the respective DLUs and integrators in the low voltage power lines of the sub-regions in the present invention.

       Example of mixed installation.

<Explanation of symbols for main parts of drawing>

1a to 1e: first to fifth transformer 2: high voltage power line

5a ~ 5e: Electric pole 10a, 10b, 10c: Low voltage power line

20: line bridge 30: focusing machine

40: line repeater 41, 61: switching power unit

42, 48, 62, 68: line coupler 43, 63: filter and amplifier

44, 64: micro process unit 45, 65: carrier controller

46, 66: carrier amplifier 47, 67: power amplifier

69: Y. pyrom 60: DLU (Data Link Unit)

70: RAM CA1 ~ CA5: Small Area

P: Middle Zone TS: Transformer

Claims (7)

(delete) (delete) One transformer 1a and a plurality of wattmeters 6a to 6n connected to the transformer 1a are set to one small region CA, and the small regions CA are grouped into N and set to the middle region P. In addition, the central region (P) is installed a concentrator 30, which is a data concentrator, and the low-voltage power line of the small region (CA) adjacent to the different low-voltage power line between the small region (CA) constituting the heavy region (P). In the remote data information collection system using power line communication connected to the line repeater 40 for transmitting to the furnace, The line repeater 40 is a switching power unit 41 for making a DC power source for driving the system using the AC 86 ~ 260V voltage supplied from the low voltage power line, A line coupler (42) (48) connected to the low voltage power line between the small area (CA) to block the line voltage of the low voltage power line and extract only data information; A filter and amplifier 43 for filtering and tuning amplifying and outputting data information extracted by the line coupler 42; A process unit 44 connected to an output terminal of the filter and amplifier 43 and having a program capable of performing the purpose and control of the system; A carrier controller 45 which loads and outputs data information on a carrier signal under control of the process unit 44; A carrier amplifier 46 for voltage amplifying data information output from the carrier controller 45; And a power amplifier (47) for power amplifying a carrier signal output from the carrier amplifier (46) and transmitting it to a line coupler (48) connected to a low voltage power line. The method of claim 3, wherein Instead of the line repeater 40, power line communication is performed between different low-voltage power lines, and after calculating and storing meter reading information and transformer information of each subregion by a set program, the control command of the concentrator 30 is used. Remote data information collection system using the power line communication, characterized in that installed the DLU (60) for transmitting and receiving the stored information to the concentrator 30 by power line communication. The method according to claim 3 or 4, The DLU (60) is a switching power unit 61 for making a DC power source for driving the system using AC 86 ~ 260V voltage supplied from the low voltage power line, A line coupler 62 and 68 connected to the low voltage power line to block the line voltage of the low voltage power line and extract only data information; A filter and amplifier 63 for filtering and tuning amplifying and outputting data information extracted by the line coupler 62; A micro-processing unit 64 connected to the output of the filter and amplifier 63 for arithmetic processing by a program capable of performing the purpose and control of the system; A carrier controller 65 for controlling and outputting a carrier of data information under the control of the micro process unit 64; A carrier amplifier 66 for voltage amplifying a carrier signal output from the carrier controller 65; A power amplifier 67 for power amplifying a carrier signal output from the carrier amplifier 66 and transmitting the same to a line coupler 68 connected to a low voltage power line; An EPROM 69 connected to the micro process unit 64 for preserving necessary data and programs predetermined in case of power failure; And a RAM (70) connected to the micro process unit (64) to temporarily store various data information. The method of claim 5, Instead of the line repeater 40, power line communication is made between different low voltage power lines, and the DLU 60 and the line repeater 40 are connected in parallel to enable bidirectional communication, and the DLU 60 and the line Repeater 40, the remote data information collection system using power line communication, characterized in that to enable the control (Enable) input to the call signal (Busy) between each other. The method of claim 6, Instead of the line repeater 40, the DLU 60 is installed for each of the different low voltage power lines, The microprocessor unit of the DLU (60) is installed in the middle zone (P) using a power line communication, characterized in that the common configuration of the microprocessor unit 34 of the concentrator 30 to collectively collect data information Remote data information collection system.